string-r=<path>, --root=<path>Specify the project root directory. Can be an absolute path, or a path relative to process.cwd(). root determines the starting point for loading configuration files, searching test files, etc.
Using <rootDir> in any path-based configuration settings will reference this value.
import { defineConfig } from 'rstest';
export default defineConfig({
setupFiles: ['<rootDir>/setup.js'],
include: ['<rootDir>/**/*.{test,spec}.?(c|m)[jt]s?(x)'],
root: './my-project',
});